Nestable culvert.



' 1. R. FREEZE.

NESTABLE cuLvEfiT.

APPLICATION FILED MAR-3.1916.

1,207,740. Patented Dec. 12, 1916 1 Witness: Lt E Attorney Inventor.

ilifififliid) hi? ATEri FEIGEG JOHNNIE-IAN R. FREEZE, O1 MIDDLETOWN, OHIO, ASSIGNOR TO THE AMERICAN ROLL- ING- MILL GOMPANY,'OF NEVJARK. N

EVI JERSEY, AND MLDDLETOWN OHIO.

ims ramin CULVERT.

Patented Dec. 12, 1916.

Application filedMm-hh ll, 1916. Serial N0. $5,808.

lie it louurn that l, Jonxxrnax .ll. liiun-izn, v

Middlctown. Butler county, Ohio, have i11 rented eg-rtaiu new and .useiiul improvements in following is; a specification.

This invention pertains to that class of sheet nelal rulrerts formed of separate sections united to each other on circum'lerential. and longitudinal lines, the sections being originally separatefltilll each other so that they nra be nested for storage and shipaaaut, eliicient joint devices being provided for aeeuring the sections together.

iiihe n'esent invention will be readily understood from the following description taken in connection with the accompanying drawing; in which i igure. "i is a plan of a. culvert built up from nesabie sections and uniting devices in exam, ilioaiion of my present invention. i? 2 a vertical lon 'itudinal section of the same in the plane of line a of Figs. 1, 2:; and Fig. 3 an end View of the. culvert: Fig. 4, a transverse section of a portion of the culvert in the-plane line of .1 and and Fig. a longitudinal section of a poi-thin of the culvert at one of the overlapping joint-s, the section lining taken in the piano of line a, of l, 3 and ii.

A iversity oil scales is employed in the In the drawi' :l,' indicates the left rear segmental sooth-in. of the culvert, the culvert being illustrated in the pres nt instance as being composed of two mum ireular halves: 2, the righthalid en'd 0'1 section 1: I"), circuin'ies Zia-ii eorrugations formed in the section. 1rd, the second rear section, sinnlar to section 1, but overlapping it: 5, the

lefthaud and of section-la the third roar section, tho same overlapping section 4: '7, the .lefthand end of section ii: 8, the three sections thus far considered, the sarnecon- 'stituting: one semi-circular long half of the.

culvo'i'tf'il, ti'ierear hall of the culvert, snaiiar to send-circular half 8, the two halves -8 and having their long edges placed near oaolrother to form a substai'itially complete circular pipe: 16, longg itmlinal spaces batween the edges oi the babes 8 and 9, these spas es being due to the fact that the edges of the two hair-"es are somewhat separated from each otiier: Ill, outwardly projecting lfestable Culverts, which the shouhfle'rs formed on the longitudinal edges of the sections, these Shoulders being prel erably formed by striking up the edges of the metal in such manner that the shoulders follow theeurves of the hills and valleys of the corrugations, the shoulders being but a short distance from the contiguous edges of the culverthalvs: 12, cover-strips disiosed inside the culvert, at the longitudinal punts thereof and fitting the circular eurrature of the culvert and fitting also the sinusoids of the corrugations ol the sections, these cover-strips being formed in sections overlapping each other so as to completely elose the interior of the spaces between the edges of the culrert halves: 13, similar coverstrips eorering the outside of the spaces between the culvert halves: and 1+, bolts passing through the inside and outside -(ZOVQISIEK'LI)S and through the spaces between length. The inside cover-strips and outside cover-strips are. alike in that selected coverstnips may be placed inside or outside the pipe.

Now, taking; two of the half-pipe-culvert sections which, as stated, may be about two feet; long, and placing; their edges near each other, and bolting; cover-strips at the inside and outside of the jointnjmd drawin; the bolts tightly, a ulvert pipe about two feet long is prodluzed. The firip oi the ,eorerstrips-on the shoiilders 11 at the edges of the sections prevents the separation of the sections and l'n'oducefi astrong piece of Gulrert which is ready for use lint which may. be disassembled by loosening the bolts, thus permitting the two halves of the pipe to he nested together. and the pairs of culvert strips to be laid-within the nested pipo halves, thus facilitating storage and Ship mont. And this, nesting; may be done with any reasonable number of the pipe-halves and their corresponding pairs of coverstrips.

If 'a culwert pipe about four feet long wanted then, in building upthe sections and cover-strips, the contiguous ends of the half pipe are overlapped one corrugation as indicated in Fig. 5, and the cover-stamps are similarly lapped at their contiguous ends, and so on for a culvert pipe of any desired length built up of a longitudinal series of lapping sections and lapping cover-strips. As shown in Fig. .5, one pipe-section laps upon the other to the extent of a. single corrugation but if an exact length of total culvert is required then the ends of the sections may overlap to the extent of two or more corrugations, as indicated at the overlapping of the ends 2 and 5.in Fig. 2, and this endwise lapping of sections may be to the extent of any desired number of corrugations to bring out the proper length. And

so, also, with the covenstrips, which may lap each other to the extent of one or a greater number of the corrugations. By employing lengths of cover-str1ps greater than the length of the pipe-sections, the

- lapping of the cover-strips may be caused to occur at longitudinal points other than those where the pipe sections lap, this being the preferable construction. In other words, desired length of culvert may be secured by varying the overlap of the sections, and the corresponding total length of the coverstrips may he arrived at by lapping them to the extent of the proper number of corrugations, it being obvious that, under the system disclosed, there can, with a suflicient number of culvert half-sections and coverstrips, be built up from nestable parts a culvert of any desired length and having its sections tightly bound together longitudinally and circumferentially. At some given point in the mid-length of the pipe there may be only three thicknesses of metal, represented by the single thickness of culvert pipe and two thicknesses of cover-strip, while at the lapping points there may be four or more thicknesses of metal as represcnted by two thicknesses of pipe and two or more. thicknesses of coverstrip. The illustration assumes the pipe as being formed of two semi-circular segmental portions joined by two pairs of cover-strips, but it is manifest that the pipe may be f'madc up of more than two segments and involve a correspondingly increased number of joints and cover-strips.

Particular attention should be called to the. bolts 14 employed in clamping the coverstrips to the pipe-sections. It is preferred that there be a bolt ateach corrugation. and by locating these. bolts at the crests of the corrugations and providing the bolts with non-cireular heads. the heads of the bolts scat upward in ,the corrugations and are thereby prevented from turning while the exterior nuts are being turned. The bolts serve not only in drawing the cover-strips together and toward the metal of the pipesections but also in compressing any paclo ing or luting material which may be employed in improving the tightness of the joint. The bolts, in drawing toward each other the cover-strips of a pair, serve also in drawing together the lapping ends of the pipe-sections where they lap more than one corrugation.

The cover-strips being entirely independent of each other before being applied to the pipe-sections, are capable of overlapping or breaking joint with the joints between the ends of the pipe-sections, and of breaking joint between pie ends of the cover-strips. In other worcs outside cover-strips may break joint with the inside covcr-strips and to any extent desired.

1. A nestable culvert comprising a circumferential series of pipe sections, said pipe sections being formed with shoulders near their longitudinal edges, cover-strips adapted to overlap the contiguous edges of said pipe sections and formed with shoulders arranged to engage the shoulders the eon, and means whereby said cover-stripsiiay be secured to said pipe sections to secure the same together, combined substantially as set forth.

2. A nestable culvert comprising, a circumferential series of pipe-sections having their longitudinal edges spaced apart, outwardly presenting shoulders upon the pipesections near their longitudinal edges, separable omen-strips disposed outside the joints and overlapping the contiguous edges of the pipe-sections and formed with interior shoulders engaging the shoulders on the pipe-sections, and bolts passing between the contiguous edges of the pipe-sections and through the separable cover-strips and means whereby said bolts are adapted to draw the inner surfaces and shoulders of: the cover-strips firmly to the outer surfaces and shoulders of the pipe-sections, combined sub-. stantially as set forth.

3. A nestable culvert comprising, a circnmferential series of eircumierentially corrugated pipe-sections having their longitudinal edges spaced apart, outwardly-presenting shoulders upon the pipesections near their longitudii'ial edges, and following the. sinusoids of the corrugations, transversely corrugated separable cover-strips disposed outside the joints and overlapping the contiguous edges of the pipe-sections and formed with interior shoulders engaging the shoulders on the pipe-sections, and bolts passing between the contiguous edges of the pipe-sections and through the separable coverstrips and means whereby said bolts are adapted to draw the inner surfaces and shoulders of the cover-strips firmly to the outer surfaces and shoulders of the pipe-sections, combined substantially as setforth.

4. A nestable culvert comprising, a. cir

10 contiguous edges of the pipe-sections and I through the separable cover strips and adapted to draw the surfaces and shoulders of the cover-strips firmly to the surfaces and shoulders of the pipe-sections, combined substantially-as set forth.

JOHNATHAN R. FREEZE.

Witnesses:

B. MoREYNoLDs, E. H. WUERDEBIAN 

